Order variables by using a loading plot

The correlogram: Visualize correlations by fitting angles

A geometric solution to isotonic regression

QPSOLVE: A new SAS IML function for quadratic optimization

Teaching AI assistants to read and write SAS IML vectors

Bimodal and unimodal beta distributions

Maximum likelihood estimates for linear regression

An exact formula for the sampling distribution of the correlation coefficient

Peeling a convex hull

Angles vs slopes: The statistics of steepness